主催: 一般社団法人 日本エネルギー学会
後援: (国研)新エネルギー・産業技術総合開発機構
会議名: 第27回日本エネルギー学会大会
開催地: 日本大学理工学部駿河台キャンパス1号館
開催日: 2018/08/08 - 2018/08/09
p. 46-47
This paper reports an experimental study of CO2 + N2 mixed gas separation based on tetra-n-butylammonium bromide (TBAB) hydrates with TBAB aqueous solution of 40 mass%. The composition of a mixed gas simulated flue gas is CO2 : N2 = 0.15 : 0.85. We used a high-pressure cell having 800 cm3 inner volume for hydrate formation. We used three different pressure levels: 1, 3 and 5 MPa with 2.5 K of subcooling temperatures. We analyzed the gas compositions in gas phase before and after the hydrate formation by a gas chromatograph and calculated the gas compositions in hydrate phase. The CO2 mole fractions in hydrate phase were higher in lower pressure conditions, i.e., 0.40–0.45 with 1 and 3 MPa and 0.30 with 5 MPa. The results suggest that TBAB hydrates have a tendency to form tetragonal and orthorhombic structures at low and high pressure conditions, respectively.